有关u-turn

小胡同

最近查google map for directions, 经常会看到需要u-turn。印象之中好像在主路上不可以，不管是否有不可u-turn的牌子。平常也看到有人在红绿灯处做u-turn。
- B: a. B# ~" o请问u-turn到底是不是合法的？
; S( P/ H$ [1 S5 a# o谢谢！

EightBelow

U-turns
& R: N( c0 D7 `• Do not make a U-turn unless you can do it safely and without interfering
3 L% n% m2 \6 q1 D! e% Qwith other traffic.
• Outside urban areas U-turns are not permitted on a curve or near the
1 l: j, k6 p; e' e" gcrest of a hill where the driver of another vehicle cannot see your vehicle.
- _+ N, c+ g" o5 ]U-turns are not permitted in urban areas in the following situations:
8 T3 [- c' J$ j3 s8 `3 e• On a roadway between intersections.
6 M; |& L! I1 D+ b) A4 C' B8 W• Where a sign prohibits making a U-turn.
• At an intersection controlled by a traffic-control signal (traffic lights).
• At an alley intersection.

无语

有红绿灯的地方U-Turn是违规的。